package com.bw.controller;

import com.alibaba.fastjson.JSON;
import com.bw.entity.User;
import com.bw.mapper.UserMapper;
import org.apache.poi.ss.formula.functions.T;
import org.spring.kun.common.Md5Utils;
import org.spring.kun.common.TokenUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import java.util.concurrent.TimeUnit;

@Controller
public class LoginController {

    @Autowired
    UserMapper userMapper;

    @Autowired
    RedisTemplate redisTemplate;

    @RequestMapping("/loginPage.do")
    public String loginPage(){

        return "login";
    }

    @RequestMapping("/login.do")
    public String login(@Valid User loginUser, BindingResult result, Model model, HttpServletResponse response){
        //1. 非空验证

        if (result.hasErrors()){

            model.addAttribute("error",result.getAllErrors().get(0).getDefaultMessage());

            return "login";
        }
        //2. 用户名不存在
        User userDB =  userMapper.selectByName(loginUser.getName());
        if (userDB == null){
            model.addAttribute("error","用户名不存在");
            return "login";

        }
        //3. 密码错误
        String loginUserPassword = loginUser.getPassword();
        String password = userDB.getPassword();
        String salt = userDB.getSalt();

        String md5String = Md5Utils.getMD5String(loginUserPassword + salt);

        if (!md5String.equals(password)){
            model.addAttribute("error","密码错误");
            return "login";
        }
        //4. 加密用户得到令牌
        TokenUtils.responseTokenByCookie(userDB,response,30);

        //5. 把用户存储到Redis
        redisTemplate.opsForValue().set(userDB.getName(), JSON.toJSONString(userDB),30, TimeUnit.MINUTES);
        //6. 给管理员发送短信 “xx  在xx时间点登录了”

        return "redirect:list.do";
    }



    @RequestMapping("/list.do")
    public String list(HttpServletRequest request,Model model){

        // 获取当前登录用户  令牌
        User user = TokenUtils.getLoginUserFromRequest(request, User.class);
        model.addAttribute("nickName",user.getNickName());
        model.addAttribute("avatarUrl",user.getAvatarUrl());

        return "list";
    }




}
